""Shut the door!" he begged them, "I fear that dragon in my marrow. I like this silence far less than the uproar of last night. Shut the door before it is too late!" Something in his voice gave the dwarves an uncomfortable feeling. Slowly, Thorin shook off his dreams and getting up he kicked away the stone that wedged the door. Then they thrust upon it, and it closed with a snap and a clang. No trace of a keyhole was there left on the inside. They were shut in the Mountain!"